Manufacture of glass tops for salt-shakers, &amp;c.



P. EBELING. MANUFGTUBE 0F GLASS TOPS FOB SALT SHKEBS, bn. APPLInuIoN rILBD nov. 7,1901.

'HH HIV WIW MMI P. EBELIN G. MANUFAGTUBE or GLASS Tops Fon SALT sumisas, am.

APPLICATION FILED ROV. 7,1907.

Patented Nov. 3, 1908.

2 BHEETB-SHEET 2.

l Inventor UNITED STATES PATENT OFFICE.

PHILLIP EBELING, OF MOUNDBVILLE, WEST VIRGINM, ASSIGNOR T0 FOSTORIA GLASS COMPANY, v0F MOUNDSVILLE, WEST VIRGINIA, A OORPORATION OF WEST VIRGINIA.

HANUVFAOTUBE 0F Gm TOPS FOB .sLT-vsmns, 66e.

No. ceases.

Specification o! Letters Patent.

Patented Nov. 8, 1908.

Application illed November 7, 1907. Serial No. 401,081.

To all Iwhom 'it may concern:

Be it known that I, Primm EBELING, a resident of Moundsville, in the count of Marshall and State of West Vir inia, ave invented certain new and usefu Improve ments in the Manufacture of Glass To s for Salt-Shakers, Sac., of which the .following is a s ecication.

invention relates to the manufacture of erforated glass tops or covers for salt andp other condiment holders, and the primary object is to provide for molding the caplike cover with internal threads for engagmg the threads of the cellar body, and at the same time form the .perforations in the cover through which the salt or other material is shaken.

A further object to provide the cover with outwardly tapering perforations so that by grinding olii' the outer face, perforations varying in size are secured as required for salt, pepper, etc.

To produce these fiangedz threaded and perforated lass covers, 1t 1s necessary to vide within the molding cavity a coree thread-forming member which is retracted by a Yrotary recedin or unscrewin movement :for detaching -it om the molde cover. A nd it is further necessary to avoid rotation of the hole-farmers or pins. With these uirements in view, I have digned improv apparatus for practicing the. invention for which novelty is claimed as well as for the method of manufacture.

In the accompanying drawin Figure 1 is a vertical sectional view of t e molding a paratns, .taken on line 1-1 of Figa 3,

o the mold closed, and Fig. 2 1s 4a sectionwten at right angles to Fig. l, or .on line 2 2 of 3, showing the mold o F' 3 is a top plan view of the mold ase an the mechanismtherebetween, the sectional mold being removed. Fig. 4 is a detail view of the internal thread-formin member. Fig. 5 illustrates one of the mol ed covers.

Referring to the drawings, 2 desi ates the mold .base on its ulderysi ehth o ite airso ugs33an 4, ,wie

Piesbasg 2 upwardly from bottom plate 5. u porting rim -6 depends from the latter, an the parts are secured together by bolts 7.

Projecting upwardly centrally from base2 is the frnsto-conical extension 8, around which sections 9 of the mold close, the latter tracto being recessed at 10 to accurately embrace extension 8 with the latter forming the bottom of the molding cavity, or that part of the cavity against which the edge of rim A of the glass to is molded. The sectional mold is recesse to form the molding cavity 11 immediately above the base extension 8, the top of this cavity consisting of the partition 12 which separates it from the plunger cavity 13, the partition havinlg passa es 14 through which the molten g ass is orced into t e molding cavity upon the lowering of the plunger 15.

` Base 2 and extension 8 are formed with the vertical assage 16, and extendin therethrough is .tlie annular hollow threa -forming member, having its upper portion 17 projecting into the moldln cavity and threaded on its exterior to m0 d the internal threads B on flange A of the molded to The hollow former is threaded exterior y between its ends at 18 to en age threads 19 of passage 16, whereby w en the hollowv former is rotated in one direction it is raised into molding osition, and when turned in the o posite irection is lowered and refrom the molded article. For rotating the hollow former its lower end 20 is of gear-wheel form and meshes with the slidingrack bar 21, having at one end handle 22. The rack bar is flanged longitudinally at .23 to move within nndercuts in base Bange 3, 3 and 4' which form a guideway. Movement of the rack bar in yone direction o crates to raise the hollow `former into mol ing position, while a reverse movement rotates and lowers the former, causin its threaded upper extremity 17 to be withdrawn from the molded article without impa'irng the j threads molded therein.

Top C of the cover is provided with a number of uplwardly or outwardl tapering openings D t rou h which the sa t, pepper, etc. is shaken, an to form thes^ openlngs, a circular plu -like carrier 24 is arran ed within the ho ow former and is provided `with 4the depending stem 25 which projects through the lower end of the former and carries nutv26 which causes the carrier 24 to raise and lower with the hollow former. But 4while thus raising and lowering, the carrier is prevented from rotating by the engagement of flattened extremity 25 with a slmilarly formed passage in base plate 5.

Carrier 24 preferably rises to the same height as the thread-molding up er extrem-4 ity 17 of the hollow former, an pro'ecting from its upper face are the upwar ly extending pins or projections 27 which when raised, as in Fig. 1, are in close proximity to partition 12 which 4,defines the top of moldin cavity 11.

At t e beginning of the operation the mold is closed around base projection 8 and the forming members raised as in Fig. 1. A proper quota of molten glass 1s placed in plunger cavity 13, and upon lowering the plunger the glass isforced downwar through passages 14 and com letely fills the molding cavity, the glass `fil ing in around the thread former 17 and pins 27, as will be understood. The surplus glass remains in the lunger cavity and may be readily removed together with the sprues in passages 14 when the mold sections are opened to remove the pressed article, as in Fig. 2. By this means exactly the same amount' of glass is forced into the molding cavity at each operation, or in other words the cavlty is always completely filled, there bein no variation Ain t e amount of glass suc as occurs when the plun er enters directly into the molding cavity. lglpon completion of the pressing operation, rack-bar 21 is reciprocated as above described for at once rotating and lowerin the thread molding member from the moded article, as shown in Fig. 2. The same movement lowers the pin carrier 24 and withdraws pins 27 from holes C which they have molded in top portion D of the cover, the carrier being prevented from rotating while thus lowering in the manner above described.

Pins 27 are preferably ta ered upwardly in order to form holes o correspondinoP shape in top D. In finishin the molded covers it is necessary to grin the top surface, and with the holes tapered, the surface may be ground off more or less according to the size of openings desired, those for salt shakers being of course larger and requiring more grinding than for pepper, etc.

I claim 1. The combination of a mold having a molding cavity, and a' thread former and hole formers movable into and out of the cavity, sai parts movin in like direction when being inserted an in like direction when being withdrawn.

2. The combination of a mold having a cover molding cavity, a thread former movable into the cavity and around which the cover is molded, and hole formers movable in the same portion of the molding cavity as the thread former. f

3. The combination of a mold havin a cover-molding cavity, a tubular rotata le thread-former projected into the cavity, a lon tudinally movable non-rotating carrier wit the tubular `thread-former, and hole formers on the carrier and projected thereby into the molding cavity.

4. The' combination of a mold having a cover molding1 cavity, a hollow former projectiii into t e cavity and having external threa s exposed within the cavit a pin carrier mova le through the hol ow former, hole forming pins projecting throu h the carrier into said cavity, and means or retracti the carrier and the hollow former.

T e combination of a mold havin a molding cavity oplen from below, a hol ow former fitting suc opening and adapted to pro'ect into the mo din cavity with the projecting portion threa ed exteriorl supporting means with which the former has threaded connection, former-rotating means operating to raise and lower the former, a non-rotating in carrier within the hollow former and a apted to rise and lower therewith, and hole forming pins projecting from the carrier above the threaded portion of the thread former.

6. The combination of a mold having a cover-molding cavity open from below, a ro; tatable hollow former proecting upwardly into the cavity with threa s on the exterior thereof a support for the hollow former with which the latter has threaded connection and means for rotating the former for pro'ecting it into the molding cavity and for Y wit drawing it therefrom, a non-rotating carrier upon which the threaded former turns, means for causing the" carrier to move inward and outward with the hollow former without interfering with the rotation of the latter, and hole forming ins projecting from the carrier into the mo ding cavit/y.

7. The combination of a mold base, mold sections adapted to close thereover and recessed to form a mold cavity immediately above the base, the mold base having an annular vertical passage o ening into the moldin cavity and space inwardly from the wal s of the latter, the space between said passage and the walls corresponding to the thickness of the rim of the molded article, a hollow former fitting the passage and projecting into the moldin cavity with the pro'ecting portion threa ed externally, means or simu taneously rotating and lowering the hollow former in said passage, a non-rotating pin carrier ittin within the hollow former and around which the latter rotates, means for moving the in carrier vertically with the former, and ho e-forming pins projecting from the carrier above the threaded upper portion of the former.

8. The combination of a mold having a molding cavity, a thread former and hole formers projecting into the molding cavity, the hole ormers'consisting of tapering pins around which the glass is molded.

9. The combination of a mold having a molding cavity, a thread former and hole foriners extending into the cavity throu h one face thereof, the opposite face of tie cavity being closed save for moltenlassentering passages, and means for with rawing the formers from the molding cavity.

10. The combination of a mold partitioned horizontally to provide a plunger cavity and a molding cavity with the molten glass passages through the partition separating said cavities, the molding cavity bemgopen from, below, a thread former projecting upwardly into the molding cavity and stoppin short of said partition, hole formers proyecting into said cavity above the thread former and reachin to said partition, and means for withdrawing the thread and hole formers. y

11. The combination of a mold base having a vertical passage, a hollow former threaded into said passa and at its u per end adapted to project a ove the mold ase and at said end provided with exterior threads, a sectional mold having a molding cavity adapted to close over the mold base with the hollow former projecting thereinto, a gear wheel at the lower end of the hollow former, a rack bar engaging the gear wheel, hole formers projecting into the molding cavity above the hollow former, and a support for the hole formers extending through the said hollow former.

In testimony whereofA I aiiix my signature in presence of two witnesses.

PHILLIP EBELING.

Witnesses:

C. B. Ron, E. B. GRANDSTAFF. 

